@mixin border-top-left-radius($radius)
    -moz-border-top-left-radius: $radius
    -webkit-border-top-left-radius: $radius
    border-top-left-radius: $radius
@mixin border-top-right-radius($radius)
    -moz-border-top-right-radius: $radius
    -webkit-border-top-right-radius: $radius
    border-top-right-radius: $radius
@mixin border-bottom-right-radius($radius)
    -moz-border-bottom-right-radius: $radius
    -webkit-border-bottom-right-radius: $radius
    border-bottom-right-radius: $radius
@mixin border-bottom-left-radius($radius)
    -moz-border-bottom-left-radius: $radius
    -webkit-border-bottom-left-radius: $radius
    border-bottom-left-radius: $radius